fix(session): inject directory into session API calls for worktree support

[gburch]

Problem

When using OpenCode with git worktrees (or any workspace where process.cwd() differs from the project directory), session API calls fail with NotFoundError:

NotFoundError: Resource not found: .../storage/session/global/ses_xxx.json

The session file exists under the correct project directory, but the server looks in global/ because it doesn't receive the directory context.

Root Cause

OpenCode's session APIs accept an optional query: { directory } parameter to resolve which project's session storage to use. Without it, the server falls back to process.cwd(), which resolves to project ID global instead of the actual worktree's project ID.

The plugin has access to the correct directory via ctx.directory, but this wasn't being passed to session API calls.

Solution

Wrap ctx.client.session with a Proxy at plugin initialization that automatically injects query: { directory: ctx.directory } into every session method call. This ensures all session operations (.get(), .messages(), .prompt(), etc.) are correctly scoped to the workspace's project.

Changes

• Added withDirectoryArgs() helper to merge directory into query parameters
• Added wrapSession() to create a Proxy that intercepts session method calls
• Added injectDirectoryClient() to apply the wrapper at startup
• Called injectDirectoryClient(ctx.client, ctx.directory) during plugin initialization

Testing

Verified that delegate_task and other session-dependent tools now work correctly when running OpenCode from a git worktree.

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Summary by cubic

Fixes session API failures in git worktrees by injecting the workspace directory into all session calls. Ensures session reads/writes target the correct project and removes NotFoundError.

• Bug Fixes
  • Wraps ctx.client.session with a Proxy to auto-add query.directory on every call.
  • Adds withDirectoryArgs, wrapSession, and injectDirectoryClient; applied at plugin init.
  • Restores session.get/messages/prompt in worktrees and alternate workspaces.

^{Written for commit 05d00c8. Summary will update on new commits.}

[github-actions]

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[gburch]

I have read the CLA Document and I hereby sign the CLA

[cubic-dev-ai]

No issues found across 1 file

Confidence score: 5/5

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